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Stability of a liquid film on a surface with periodic array of gas-filled grooves

par Ajaev, Vladimir V.S.;Gatapova, Elizaveta Ya;Kabov, Oleg
Référence Microgravity, science and technology, 24, 1, page (33-37)
Publication Publié, 2012-01

Article révisé par les pairs

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Résumé :

We develop a linear stability theory for a thin liquid film on a structured solid surface with periodic grooves filled by a gas. The main mechanism driving the instability is due to the London-van der Waals disjoining pressure. The grooves are shown to have a destabilizing effect on the film. The results of linear stability analysis are compared with numerical simulations based on the strongly nonlinear equation for film thickness. © Springer Science+Business Media B.V. 2011.